Noise from 2-blade propellers.

Bibliographic Details
Corporate Author:	United States. National Advisory Committee for Aeronautics
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1935.
Subjects:	Airplanes > Noise. Engines. Aeronautics > Research.
Online Access:	Electronic resource (PDF)

Description
Item Description:	Includes figures, mathematical formulas, appendix of acoustical terms, and references.
Physical Description:	1 online resource (9 pages), digital, PDF file